Add resolve_outputs parameter to stacks API

[OpenStack Infra]

https://review.openstack.org/263270
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commit c8818c864f93cb2d23b95f28544fecb3df9ffc8e
Author: Oleksii Chuprykov <email address hidden>
Date: Mon Jan 4 16:02:58 2016 +0200

    Add resolve_outputs parameter to stacks API

    Add resolve_outputs parameter to stack_show. It allows user
    to get stack data without resolving outputs. It is needed because
    of 2 reasons:
    1) We have output_show an output_list already in our API
    2) Such resolving can consume a huge amount of time, but user may
    want to resolve only several or none outputs.

    @APIImpact, @DOCImpact

    Change-Id: I03104efc535a7bd4326cbec56c01cd887db38ab6